Message essentials contain basic message functionalities, such as sending or viewing a message, and forms the operational basis for advanced message features and other functionalities in the Chat API.
The following table shows a list of actions supported for message essentials. API endpoints are relative to the base URL allocated to your Sendbird application. In this page, the /{channel_type}/{channel_url}/messages endpoint refers to https://api-{application_id}.sendbird.com/v3/{channel_type}/{channel_url}/messages.
Note: If you want to know the ID and base URL of your application, sign in to the Sendbird Dashboard, go to the Settings > Application > General, and then check the Application ID and API request URL.
It's recommended that the parameter values in API URLs be urlencoded, such as {user_id} and {channel_url}.